Cristiano Ronaldo, then with Real Madrid, during a Champions League game against Juventus in April. (Photo by Shot for Press/Action Plus via Getty Images)

After nine years at Real Madrid, Cristiano Ronaldo is leaving the global soccer giant for the Italian Serie A club Juventus. The deal is worth at least $340 million over four years, according to Forbes sources.

The tally includes a $140 million (€120 million) transfer fee owed to Real and a net annual salary for Ronaldo of roughly $35 million (€30 million). There are no bonuses or incentives in the deal, per sources.

Based on Italy's top tax rate, Ronaldo's new gross salary equates to $64 million, a pay cut from the $66 million he was expected to have made this upcoming season in salary and bonus if he stayed at the Santiago Bernabéu Stadium. This lags behind the gross pay of Lionel Messi ($84 million) and Neymar ($73 million), both of whom received new deals last year from their respective clubs, Barcelona and Paris Saint-Germain.

No soccer player is close to Ronaldo in terms of endorsement earnings, though. With the $47 million he earns off the pitch from endorsements, appearances and licensing, he is still on track to bank at least $111 million through the upcoming season, enough to keep him the second-highest-paid soccer player in the world.

The move marks the end of a remarkable tenure for Ronaldo at the Bernabéu, where the 33-year old Portuguese forward became the club’s all-time leading goal scorer, won four of his five Ballon d’Or awards and led Real Madrid to four Champions League titles.

Perhaps that is why his transfer fee held up. Nine years ago, Real Madrid paid Manchester United the equivalent of $133 million in today's dollars for Ronaldo. Today, the team recouped that plus $7 million from Juve.

Juventus is Italy’s most storied soccer club, but it can’t approach the scope and platform of Real Madrid. Forbes' latest ranking of the world’s most valuable soccer teams ranked Real second at $4.088 billion, a shade behind Manchester United, while Juventus ranked ninth at $1.472 billion. Real’s revenues were $735 million, compared with $442 million for Juventus.

Supporters with Cristiano Ronaldo Juventus jerseys in front of the Juventus store in Turin on July 10. (Photo: Isabella Bonotto / AFP/Getty Images)

The move was reportedly caused by a dispute with Madrid president Florentino Perez over a new contract, with Ronaldo having fallen behind rivals Lionel Messi and Neymar in terms of playing salary. Forbes' look last month at the world’s highest-paid athletes had Ronaldo third overall, behind Floyd Mayweather and Messi.

In a statement on the move, Real Madrid said, "Real Madrid would like to communicate that we have listened to the wish and request expressed by player Cristiano Ronaldo and have agreed to his transfer to Juventus FC."

Ronaldo is a one-man economy, thanks to his role as the dominant personality in the world's biggest sport. He has more than 300 million followers across Facebook, Twitter and Instagram, and his personal Facebook page alone has 122 million fans, 20 million more than any other person on the planet. He generated $474 million in value for his sponsors over the last 12 months on his social media accounts, according to data from research firm Hookit. The Nike lifer even generated $216 million in value for Adidas on social media, thanks to posts in which Ronaldo was wearing his Real Madrid uniform, which includes Adidas' Three Stripes logo.

Facebook is in talks with Ronaldo for an original series on its Facebook Watch platform, according to Variety. The deal could be worth as much as $10 million for a 13-episode docu-series.

Ahead of this transfer, Ronaldo inked a deal with the Associazione Volontari Italiani Sangue, the Italian Blood Volunteering Association. The agreement with U.S. laboratory Abbott, which has the rights to a worldwide campaign, will see that his image is used to promote blood donation throughout the country.

Correction: An earlier version contained a miscalculated gross salary for Ronaldo for this upcoming season at Juventus. The total value of the deal, the transfer fee, and the net annual salary originally reported remain the same and were not affected by this.

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